Hello, PCOS is easily diagnosed and am sure your obstetrician would have told you by now considering the many scans you had over the years when you were pregnant. The cyst size is important as well as the numbers of cysts. Knowing pregnancy within 4 weeks is very early and not sure how you confirmed it, by the urine spot card method or by a blood test. People with urticaria can occasionally get a flare up when pregnant in the early stages of pregnancy and is also important that you get liver function tests to ensure the bilrubin levels are normal. There is yet another important test known as the antiphospholipid antibody test, ANA - that if positive will give you the reason why you are having these early spontaneous miscarriages. Suggest you take long-acting non-sedating antihistamines like fexofenadine 180mg or cetirizine 10mg twice daily for a month and see the response. Thanks.